There are 5 Ryan Aircraft B1 aircraft on the U.S. registry that TailWiki has a page for. Every one is built from the public FAA record — year, serial, engine, home base, and registration history — and owners and pilots add photos, trips, and stories on top.
N6956
1928 Ryan Aircraft B1
Baldwin Park, CA
N1550
Ryan Aircraft B1
Mcminnville, OR
N3211
Ryan Aircraft B1
Mcminnville, OR
N6955
Ryan Aircraft B1
Colbert, WA
N7214
Ryan Aircraft B1
Oro Valley, AZ